A. Traffic for a bidirectional group flows along the one shared tree and simultaneously utilizes multiple paths in a redundant network topology.B. It does not require any traffic signaling in the protocolC. Membership to a bidirectional group is signaled using explicit Join messages.D. It maintains source-specific forwarding state.E. It reduces memory, bandwidth, and CPU requirements

Answer: BCE

QUESTION 13A network architect is tasked to design and deploy multicast in a service provider core. There is a requirement to have two PIM RP routers for PIM-SM distribute mode.What can the network architect do to satisfy this requirement?

A. Set two RPs with same priority.B. Set two RPs, one with high priority and the other with low priority.C. Set one RP as the main RP and another as a backup RP.D. Set the RP-BSR method with one high-priority RP and one low-priority RP.

A. Default MDT groups are used for PIM control traffic, low-bandwidth sources, and flooding of sparse mode traffic.B. MDTs are built in customer networksC. Data MDT groups are used for high-bandwidth sources to reduce replication to uninterested PEs.D. MDTs are built in provider networksE. The number of MDTs depends on PIM modes of MDT groups.

Answer: CDEExplanation:Tree created by the MVPN configuration. The Default-MDT is used for customer Control Plane and low rate Data Plane traffic. It connects all of the PE routers with MVRFs in a particular MD and one will exist in every MD whether there is any active source in the respective customer network.

QUESTION 15What is the role of Forwarding Equivalence Class (FEC) in MPLS?

A. FEC determines how to establish an LSP path.B. FEC determines how IP packets are forwarded in MPLS LSP.C. FEC determines how MPLS labels are stacked in LSP.D. FEC determines how a group of IP packets are mapped to an LSP.

A. for trail trace identificationB. as the backward defect indicatorC. to transmit information between OTU termination pointsD. to extend command and management functions over several framesE. General communication channels 1 and 2 (GCC1/GCC2) do not belong to OTU OH.

Answer: EExplanation: OTU overhead:The OTU overhead consists of three bytes for section monitoring (SM), a two-byte general communications channel (GCC0), and two bytes reserved for future international standardization.

A. MP-BGP is used for label distribution for VPN customer routes.B. LDP is primarily used in internal networks of MPLS-VPN providers.C. MP-BGP is used for label distribution in MPLS Traffic Engineered networks.D. Directed LDP is used for label distribution in L2-VPN Attachement Circuits.

Answer: C

QUESTION 18RIPv2 differs from RIPv1 in which three things? (Choose three).

A. it uses multicast address 224.0.0.10, instead of broadcast.B. it uses multicast address 224.0.0.9, instead of broadcast.C. it can use either multicast or broadcast addresses,instead of just broadcast.D. it sends incremental updates,instead of periodic updates.E. it is classless, instead of classfullF. it supports authentication, and RIPv1 does not